/* =====================================================================
   MakeItFree VPN — official site
   Design language: premium dark security / developer-tools product
   Tokens: slate-near-black surfaces, restrained cyan accent,
           Inter (UI) + JetBrains Mono (technical)
   ===================================================================== */

:root {
  /* --- surfaces ---
     Значения один-в-один из палитры клиентов: windows/src/MakeItFree.App/
     Theme/Colors.xaml и android/.../ui/theme/Color.kt (darkMifPalette).
     Сайт и приложения должны читаться как один продукт, поэтому тут не
     «похожий тёмный», а ровно те же hex. */
  --bg-deep:      #04060c;   /* BgDeep     — фон страницы */
  --bg-base:      #06080f;   /* BgBase     — сайдбар/подложка */
  --bg-surface:   #0a0e1c;   /* BgSurface  — карточки */
  --bg-elevated:  #0f1428;   /* BgElevated — карточка на карточке */
  --bg-inset:     #03050a;   /* глубже BgDeep — утопленные блоки (код, спеки) */

  /* --- text (Fg1..Fg4 из клиента: белый со ступенчатой прозрачностью) --- */
  --fg-1: #ffffff;                    /* primary */
  --fg-2: rgba(255,255,255,0.78);     /* secondary */
  --fg-3: rgba(255,255,255,0.50);     /* muted */
  --fg-4: rgba(255,255,255,0.32);     /* faint / captions */

  /* --- lines (Line1..Line3) --- */
  --line-1: rgba(255,255,255,0.05);
  --line-2: rgba(255,255,255,0.09);
  --line-3: rgba(255,255,255,0.16);

  /* --- accents --- */
  --accent:        #22d3ee;   /* Cyan     — «защищено / подключено» */
  --accent-strong: #06b6d4;   /* CyanDeep */
  --accent-dim:    rgba(34,211,238,0.12);
  --accent-line:   rgba(34,211,238,0.32);
  --cyan:          #67e8f9;   /* CyanSoft — технический хайлайт.
                                 Был sky-blue #38bdf8, которого нет ни в одном
                                 клиенте: на сайте он выглядел вторым брендовым
                                 цветом. CyanSoft — та же линейка, что и акцент. */
  --cyan-dim:      rgba(103,232,249,0.10);
  --violet:        #a78bfa;
  --amber:         #f97316;   /* Orange из клиента */
  --danger:        #ef4444;   /* Red из клиента */
  --ok:            #10b981;   /* Green из клиента — статусы «онлайн» */

  /* --- radii --- */
  --r-xs: 6px;
  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 26px;

  /* --- layout --- */
  --maxw: 1200px;
  --nav-h: 64px;

  --shadow-card: 0 1px 0 0 var(--line-1) inset, 0 12px 40px -16px rgba(0,0,0,0.7);
  --shadow-pop:  0 24px 60px -20px rgba(0,0,0,0.85);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ----------------------------- reset ------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 24px); -webkit-text-size-adjust: 100%; }

body {
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  background: var(--bg-deep);
  color: var(--fg-1);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* ambient background */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    /* Aurora-подсветка как в WPF-клиенте (Aurora1/2/3Fill в Colors.xaml):
       циан сверху-справа, глубокий циан слева, мягкий CyanSoft снизу. */
    radial-gradient(1100px 620px at 78% -8%, rgba(34,211,238,0.10), transparent 60%),
    radial-gradient(900px 540px at 8% 4%, rgba(14,116,144,0.10), transparent 58%),
    radial-gradient(820px 520px at 40% 100%, rgba(103,232,249,0.05), transparent 62%),
    var(--bg-deep);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--line-1) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-1) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(900px 600px at 50% -5%, #000 0%, transparent 70%);
          mask-image: radial-gradient(900px 600px at 50% -5%, #000 0%, transparent 70%);
  opacity: 0.5;
}

a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; }
code, kbd, pre, .mono { font-family: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace; }

::selection { background: var(--accent-dim); color: #cffafe; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* --------------------------- utilities ----------------------------- */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: 24px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent); font-weight: 500;
}
.eyebrow::before { content: ""; width: 18px; height: 1px; background: var(--accent-line); }
.section { padding: 96px 0; position: relative; }
.section-head { max-width: 640px; margin-bottom: 48px; }
.section-head h2 {
  font-size: clamp(26px, 4vw, 38px);
  line-height: 1.15; letter-spacing: -0.02em; font-weight: 650;
  margin: 16px 0 14px;
}
.section-head p { color: var(--fg-2); font-size: 17px; }
.muted { color: var(--fg-3); }
.divider { height: 1px; background: var(--line-1); border: 0; }
.text-mono { font-family: 'JetBrains Mono', monospace; }

/* ----------------------------- buttons ----------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  height: 44px; padding: 0 18px; border-radius: var(--r-sm);
  font-size: 14.5px; font-weight: 550; letter-spacing: -0.01em;
  border: 1px solid transparent; white-space: nowrap;
  transition: transform .18s var(--ease), background .18s var(--ease),
              border-color .18s var(--ease), box-shadow .18s var(--ease), color .18s var(--ease);
}
.btn svg { width: 17px; height: 17px; }
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: linear-gradient(180deg, #5fe6f5, var(--accent-strong));
  color: #042b33; font-weight: 650;
  box-shadow: 0 8px 24px -10px rgba(34,211,238,0.6), 0 0 0 1px rgba(34,211,238,0.25) inset;
}
.btn-primary:hover { box-shadow: 0 12px 30px -10px rgba(34,211,238,0.75); transform: translateY(-1px); }

.btn-ghost { background: var(--bg-elevated); color: var(--fg-1); border-color: var(--line-2); }
.btn-ghost:hover { border-color: var(--line-3); background: #161c33; transform: translateY(-1px); }

.btn-line { background: transparent; color: var(--fg-2); border-color: var(--line-2); }
.btn-line:hover { color: var(--fg-1); border-color: var(--line-3); }

.btn-sm { height: 38px; padding: 0 14px; font-size: 13.5px; }

/* ------------------------------ chips ------------------------------ */
.chip {
  display: inline-flex; align-items: center; gap: 7px;
  height: 30px; padding: 0 12px; border-radius: 999px;
  background: var(--bg-elevated); border: 1px solid var(--line-2);
  font-family: 'JetBrains Mono', monospace; font-size: 12.5px; color: var(--fg-2);
}
.chip .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 3px var(--accent-dim); }
.chip-accent { border-color: var(--accent-line); color: var(--accent); background: var(--accent-dim); }
.chip-cyan { color: var(--cyan); border-color: rgba(103,232,249,0.3); background: var(--cyan-dim); }

/* ============================== NAV ================================= */
.nav {
  position: sticky; top: 0; z-index: 100;
  height: var(--nav-h);
  background: rgba(6,8,15,0.78);   /* BgBase с прозрачностью */
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--line-1);
}
.nav-inner { display: flex; align-items: center; gap: 28px; height: 100%; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 650; letter-spacing: -0.02em; font-size: 15.5px; }
.brand .logo {
  width: 30px; height: 30px; border-radius: 9px;
  display: grid; place-items: center;
  background: linear-gradient(150deg, #0d2730, #0c1119);
  border: 1px solid var(--accent-line);
  box-shadow: 0 0 18px -6px rgba(34,211,238,0.5) inset;
}
.brand .logo svg { width: 17px; height: 17px; color: var(--accent); }
.brand b { color: var(--fg-1); }
.brand span { color: var(--fg-3); font-weight: 500; }

.nav-links { display: flex; align-items: center; gap: 4px; margin-left: 8px; }
.nav-links a {
  padding: 8px 12px; border-radius: 8px; font-size: 14px; color: var(--fg-2);
  transition: color .15s, background .15s;
}
.nav-links a:hover { color: var(--fg-1); background: var(--line-1); }
.nav-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }

.nav-toggle { display: none; width: 40px; height: 40px; border-radius: 9px;
  background: var(--bg-elevated); border: 1px solid var(--line-2); color: var(--fg-1);
  align-items: center; justify-content: center; }

/* ============================== HERO =============================== */
.hero { position: relative; padding: 84px 0 64px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.hero h1 {
  font-size: clamp(36px, 6vw, 60px); line-height: 1.04; letter-spacing: -0.035em;
  font-weight: 680; margin: 22px 0 20px;
}
.hero h1 .grad {
  /* Градиент держим внутри циановой линейки клиента (CyanSoft → Cyan →
     CyanDeep). Раньше проходил через мятный #6ee7b7 и sky #38bdf8 — цвета,
     которых нет ни в Windows-, ни в Android-клиенте. */
  background: linear-gradient(100deg, #ffffff 6%, var(--cyan) 46%, var(--accent) 74%, var(--accent-strong) 98%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { font-size: 18.5px; color: var(--fg-2); max-width: 540px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 10px; margin: 26px 0 30px; }
.hero-points .pt {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13.5px; color: var(--fg-2);
  background: var(--bg-surface); border: 1px solid var(--line-1);
  padding: 7px 12px; border-radius: 999px;
}
.hero-points .pt svg { width: 15px; height: 15px; color: var(--accent); }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-meta { margin-top: 22px; display: flex; gap: 22px; flex-wrap: wrap; color: var(--fg-4); font-size: 13px; }
.hero-meta b { color: var(--fg-2); font-weight: 600; }

/* hero visual — connection panel */
.panel {
  background: linear-gradient(180deg, var(--bg-surface), var(--bg-base));
  border: 1px solid var(--line-2); border-radius: var(--r-lg);
  box-shadow: var(--shadow-pop); overflow: hidden;
}
.panel-top {
  display: flex; align-items: center; gap: 8px; padding: 12px 16px;
  border-bottom: 1px solid var(--line-1); background: var(--bg-inset);
}
.panel-top .dots { display: flex; gap: 6px; }
.panel-top .dots i { width: 11px; height: 11px; border-radius: 50%; background: var(--line-3); }
.panel-top .ttl { font-family: 'JetBrains Mono', monospace; font-size: 12.5px; color: var(--fg-3); margin-left: 6px; }
.panel-body { padding: 22px; }

.conn {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 18px; border-radius: var(--r-md);
  background: radial-gradient(120% 120% at 0% 0%, rgba(34,211,238,0.08), transparent 60%), var(--bg-elevated);
  border: 1px solid var(--accent-line);
}
.conn .ring {
  width: 54px; height: 54px; border-radius: 50%; display: grid; place-items: center;
  border: 2px solid var(--accent); color: var(--accent);
  box-shadow: 0 0 0 6px var(--accent-dim), 0 0 26px -4px rgba(34,211,238,0.55);
  animation: pulse 2.6s var(--ease) infinite;
}
.conn .ring svg { width: 22px; height: 22px; }
@keyframes pulse { 0%,100% { box-shadow: 0 0 0 6px var(--accent-dim), 0 0 26px -4px rgba(34,211,238,0.45); } 50% { box-shadow: 0 0 0 10px rgba(34,211,238,0.05), 0 0 34px -2px rgba(34,211,238,0.7); } }
.conn .info { text-align: right; }
.conn .info .st { font-weight: 650; color: var(--accent); letter-spacing: -0.01em; }
.conn .info .sv { font-family: 'JetBrains Mono', monospace; font-size: 12.5px; color: var(--fg-3); }

.stat-row { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; margin-top: 14px; }
.stat-row .s { background: var(--bg-inset); border: 1px solid var(--line-1); border-radius: var(--r-sm); padding: 12px; }
.stat-row .s .k { font-size: 11px; color: var(--fg-4); text-transform: uppercase; letter-spacing: 0.08em; }
.stat-row .s .v { font-family: 'JetBrains Mono', monospace; font-size: 16px; color: var(--fg-1); margin-top: 4px; }
.stat-row .s .v small { color: var(--fg-3); font-size: 11px; }

.proto-strip { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 6px; }
.proto-strip .t { font-family: 'JetBrains Mono', monospace; font-size: 11.5px; color: var(--fg-2);
  border: 1px solid var(--line-2); border-radius: 6px; padding: 4px 8px; background: var(--bg-inset); }

/* logos / marquee strip */
.trust { border-top: 1px solid var(--line-1); border-bottom: 1px solid var(--line-1); padding: 22px 0; }
.trust-inner { display: flex; align-items: center; gap: 14px 32px; flex-wrap: wrap; justify-content: center; color: var(--fg-3); }
.trust-inner span { font-family: 'JetBrains Mono', monospace; font-size: 13px; display: inline-flex; align-items: center; gap: 8px; }
.trust-inner span svg { width: 15px; height: 15px; color: var(--fg-4); }

/* ============================ CARDS GRID =========================== */
.grid { display: grid; gap: 16px; }
.g-3 { grid-template-columns: repeat(3, 1fr); }
.g-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: linear-gradient(180deg, var(--bg-surface), var(--bg-base));
  border: 1px solid var(--line-1); border-radius: var(--r-md);
  padding: 24px; box-shadow: var(--shadow-card);
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}
.card:hover { border-color: var(--line-2); transform: translateY(-2px); }
.card .ico {
  width: 40px; height: 40px; border-radius: 11px; display: grid; place-items: center;
  background: var(--accent-dim); border: 1px solid var(--accent-line); color: var(--accent);
  margin-bottom: 16px;
}
.card .ico.cyan { background: var(--cyan-dim); border-color: rgba(103,232,249,0.3); color: var(--cyan); }
.card .ico svg { width: 20px; height: 20px; }
.card h3 { font-size: 17px; font-weight: 620; letter-spacing: -0.01em; margin-bottom: 8px; }
.card p { color: var(--fg-3); font-size: 14.5px; }
.card .tag-list { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.card .tag-list .t {
  font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--fg-2);
  border: 1px solid var(--line-2); border-radius: 6px; padding: 3px 8px; background: var(--bg-inset);
}
.card .tag-list .t.on { color: var(--accent); border-color: var(--accent-line); background: var(--accent-dim); }

.feat-list { list-style: none; padding: 0; margin: 14px 0 0; display: grid; gap: 9px; }
.feat-list li { display: flex; gap: 10px; align-items: flex-start; color: var(--fg-2); font-size: 14px; }
.feat-list li svg { width: 16px; height: 16px; color: var(--accent); flex: none; margin-top: 3px; }

/* ========================= ARCHITECTURE =========================== */
.arch-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.arch-card { background: linear-gradient(180deg, var(--bg-surface), var(--bg-base));
  border: 1px solid var(--line-1); border-radius: var(--r-lg); padding: 26px; box-shadow: var(--shadow-card); }
.arch-card .head { display: flex; align-items: center; gap: 12px; margin-bottom: 6px; }
.arch-card .head .os { width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center;
  background: var(--bg-elevated); border: 1px solid var(--line-2); color: var(--fg-1); }
.arch-card .head .os svg { width: 20px; height: 20px; }
.arch-card .head h3 { font-size: 18px; font-weight: 640; }
.arch-card .head .sub { font-size: 13px; color: var(--fg-3); font-family: 'JetBrains Mono', monospace; }
.arch-card .stack-tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 16px 0 20px; }
.arch-card .stack-tags .t { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--fg-2);
  border: 1px solid var(--line-2); border-radius: 6px; padding: 4px 9px; background: var(--bg-inset); }

/* flow diagram */
.flow { display: flex; flex-direction: column; gap: 0; }
.flow .node {
  display: flex; align-items: center; gap: 12px;
  background: var(--bg-inset); border: 1px solid var(--line-2); border-radius: var(--r-sm);
  padding: 12px 14px;
}
.flow .node .b { width: 28px; height: 28px; border-radius: 7px; display: grid; place-items: center;
  background: var(--bg-elevated); border: 1px solid var(--line-2); color: var(--accent); flex: none; }
.flow .node .b svg { width: 15px; height: 15px; }
.flow .node .nm { font-weight: 560; font-size: 14.5px; }
.flow .node .ds { font-size: 12px; color: var(--fg-3); margin-left: auto; font-family: 'JetBrains Mono', monospace; }
.flow .node.accent { border-color: var(--accent-line); background: radial-gradient(120% 120% at 0 0, var(--accent-dim), transparent 70%), var(--bg-inset); }
.flow .arrow { display: grid; place-items: center; height: 26px; color: var(--fg-4); }
.flow .arrow svg { width: 16px; height: 16px; }

.bridge-note {
  margin-top: 18px; padding: 12px 14px; border-radius: var(--r-sm);
  background: var(--cyan-dim); border: 1px solid rgba(103,232,249,0.25);
  font-size: 13px; color: var(--fg-2);
}
.bridge-note code { color: var(--cyan); font-size: 12.5px; }

/* =========================== ROUTING ============================== */
.mode-card { background: var(--bg-surface); border: 1px solid var(--line-1); border-radius: var(--r-md); padding: 20px; }
.mode-card .mh { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.mode-card .mh .mi { width: 32px; height: 32px; border-radius: 8px; display: grid; place-items: center;
  background: var(--accent-dim); color: var(--accent); border: 1px solid var(--accent-line); }
.mode-card .mh .mi svg { width: 17px; height: 17px; }
.mode-card .mh h4 { font-size: 15.5px; font-weight: 620; }
.mode-card .mh .mono { margin-left: auto; font-size: 11.5px; color: var(--fg-4); }
.mode-card p { color: var(--fg-3); font-size: 13.5px; }

/* tabs */
.tabs { display: inline-flex; gap: 4px; padding: 4px; background: var(--bg-inset);
  border: 1px solid var(--line-1); border-radius: 12px; margin-bottom: 24px; }
.tabs button { height: 36px; padding: 0 16px; border-radius: 9px; background: transparent;
  color: var(--fg-3); border: 0; font-size: 14px; font-weight: 550; display: inline-flex; align-items: center; gap: 8px;
  transition: color .15s, background .15s; }
.tabs button svg { width: 16px; height: 16px; }
.tabs button.active { background: var(--bg-elevated); color: var(--fg-1); box-shadow: 0 1px 0 var(--line-2) inset, 0 2px 8px -4px rgba(0,0,0,.6); }
.tab-panel { display: none; animation: fade .3s var(--ease); }
.tab-panel.active { display: block; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* ========================= CODE BLOCKS ============================ */
.code {
  position: relative; background: var(--bg-inset); border: 1px solid var(--line-2);
  border-radius: var(--r-md); overflow: hidden;
}
.code .ch { display: flex; align-items: center; gap: 8px; padding: 9px 14px;
  border-bottom: 1px solid var(--line-1); background: rgba(255,255,255,0.015); }
.code .ch .lbl { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--fg-3); }
.code .ch .copy { margin-left: auto; height: 28px; padding: 0 10px; border-radius: 7px;
  background: var(--bg-elevated); border: 1px solid var(--line-2); color: var(--fg-2);
  font-size: 12px; display: inline-flex; align-items: center; gap: 6px; transition: .15s; }
.code .ch .copy:hover { color: var(--fg-1); border-color: var(--line-3); }
.code .ch .copy svg { width: 13px; height: 13px; }
.code pre { margin: 0; padding: 16px; overflow-x: auto; font-size: 13px; line-height: 1.7; color: var(--fg-1); }
.code pre .cm { color: var(--fg-4); }
.code pre .sc { color: var(--accent); }     /* scheme */
.code pre .ky { color: var(--cyan); }        /* key */
.code pre .vl { color: var(--amber); }       /* value */
.code pre .pn { color: var(--violet); }      /* punctuation-ish */

/* deeplink rows */
.dl-row { display: grid; grid-template-columns: 180px 1fr; gap: 18px; padding: 18px 0; border-top: 1px solid var(--line-1); align-items: start; }
.dl-row:first-of-type { border-top: 0; }
.dl-row .lhs h4 { font-size: 15px; font-weight: 600; }
.dl-row .lhs p { font-size: 13px; color: var(--fg-3); margin-top: 4px; }

/* ============================== DOCS ============================== */
.docs-layout { display: grid; grid-template-columns: 232px 1fr; gap: 40px; align-items: start; }
.docs-side { position: sticky; top: calc(var(--nav-h) + 24px); }
.docs-side .grp { margin-bottom: 22px; }
.docs-side .grp .gt { font-family: 'JetBrains Mono', monospace; font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--fg-4); padding: 0 10px; margin-bottom: 8px; }
.docs-side a { display: block; padding: 7px 10px; border-radius: 8px; font-size: 13.5px; color: var(--fg-3);
  border-left: 2px solid transparent; transition: .15s; }
.docs-side a:hover { color: var(--fg-1); background: var(--line-1); }
.docs-side a.active { color: var(--accent); border-left-color: var(--accent); background: var(--accent-dim); }

.doc-block { margin-bottom: 44px; scroll-margin-top: calc(var(--nav-h) + 24px); }
.doc-block > h3 { font-size: 22px; font-weight: 640; letter-spacing: -0.02em; margin-bottom: 6px; }
.doc-block > .lead { color: var(--fg-2); margin-bottom: 20px; }

/* steps */
.steps { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.steps li { display: flex; gap: 16px; background: var(--bg-surface); border: 1px solid var(--line-1);
  border-radius: var(--r-sm); padding: 16px 18px; }
.steps li .n { width: 30px; height: 30px; flex: none; border-radius: 8px; display: grid; place-items: center;
  font-family: 'JetBrains Mono', monospace; font-weight: 600; font-size: 14px;
  background: var(--accent-dim); color: var(--accent); border: 1px solid var(--accent-line); }
.steps li h5 { font-size: 15px; font-weight: 600; margin-bottom: 3px; }
.steps li p { font-size: 13.5px; color: var(--fg-3); }

/* interface list (two col) */
.iface { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.iface .col { background: var(--bg-surface); border: 1px solid var(--line-1); border-radius: var(--r-md); padding: 20px; }
.iface .col h5 { display: flex; align-items: center; gap: 9px; font-size: 14px; font-weight: 620; margin-bottom: 14px; }
.iface .col h5 svg { width: 17px; height: 17px; color: var(--fg-2); }
.iface .col ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 1px; }
.iface .col li { display: flex; gap: 11px; padding: 9px 0; border-top: 1px solid var(--line-1); font-size: 13.5px; color: var(--fg-2); }
.iface .col li:first-child { border-top: 0; }
.iface .col li b { color: var(--fg-1); font-weight: 560; }
.iface .col li .lab { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--accent); min-width: 92px; }

/* table */
.tbl { width: 100%; border-collapse: collapse; border: 1px solid var(--line-1); border-radius: var(--r-md); overflow: hidden; }
.tbl th, .tbl td { text-align: left; padding: 12px 16px; font-size: 13.5px; border-bottom: 1px solid var(--line-1); }
.tbl th { background: var(--bg-inset); color: var(--fg-3); font-weight: 550; font-family: 'JetBrains Mono', monospace; font-size: 12px; text-transform: uppercase; letter-spacing: 0.05em; }
.tbl td { color: var(--fg-2); }
.tbl td .mono { color: var(--cyan); }
.tbl tr:last-child td { border-bottom: 0; }

/* ============================ DOWNLOAD ============================ */
.dl-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.dl-card { background: linear-gradient(180deg, var(--bg-surface), var(--bg-base)); border: 1px solid var(--line-2);
  border-radius: var(--r-lg); padding: 28px; box-shadow: var(--shadow-card); }
.dl-card .top { display: flex; align-items: center; gap: 14px; margin-bottom: 20px; }
.dl-card .top .os { width: 48px; height: 48px; border-radius: 13px; display: grid; place-items: center;
  background: var(--bg-elevated); border: 1px solid var(--line-2); }
.dl-card .top .os svg { width: 26px; height: 26px; color: var(--fg-1); }
.dl-card .top h3 { font-size: 19px; font-weight: 640; }
.dl-card .top .req { font-size: 13px; color: var(--fg-3); }
.dl-card .specs { display: grid; grid-template-columns: repeat(2,1fr); gap: 10px; margin-bottom: 22px; }
.dl-card .specs .sp { background: var(--bg-inset); border: 1px solid var(--line-1); border-radius: var(--r-sm); padding: 11px 13px; }
.dl-card .specs .sp .k { font-size: 11px; color: var(--fg-4); text-transform: uppercase; letter-spacing: 0.06em; }
.dl-card .specs .sp .v { font-family: 'JetBrains Mono', monospace; font-size: 14px; color: var(--fg-1); margin-top: 3px; }
.dl-card .dl-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.dl-card .dl-actions .btn { flex: 1; min-width: 140px; }

/* ============================== FAQ =============================== */
.faq { display: grid; gap: 10px; max-width: 820px; }
.faq-item { background: var(--bg-surface); border: 1px solid var(--line-1); border-radius: var(--r-md); overflow: hidden; }
.faq-item summary { list-style: none; cursor: pointer; padding: 18px 20px; display: flex; align-items: center; gap: 14px;
  font-weight: 560; font-size: 15.5px; transition: background .15s; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { background: var(--line-1); }
.faq-item summary .pm { margin-left: auto; width: 22px; height: 22px; color: var(--fg-3); transition: transform .25s var(--ease); flex: none; }
.faq-item[open] summary .pm { transform: rotate(45deg); color: var(--accent); }
.faq-item .ans { padding: 0 20px 20px 56px; color: var(--fg-3); font-size: 14.5px; }
.faq-item .ans code { background: var(--bg-inset); border: 1px solid var(--line-2); border-radius: 5px; padding: 1px 6px; font-size: 12.5px; color: var(--cyan); }

/* ============================== CTA =============================== */
.cta-band {
  position: relative; border: 1px solid var(--accent-line); border-radius: var(--r-xl);
  padding: 52px; text-align: center; overflow: hidden;
  background: radial-gradient(120% 160% at 50% 0%, rgba(34,211,238,0.12), transparent 60%), var(--bg-surface);
}
.cta-band h2 { font-size: clamp(26px, 4vw, 36px); letter-spacing: -0.02em; font-weight: 660; margin-bottom: 12px; }
.cta-band p { color: var(--fg-2); max-width: 520px; margin: 0 auto 26px; }
.cta-band .row { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ============================= FOOTER ============================= */
.footer { border-top: 1px solid var(--line-1); padding: 56px 0 40px; margin-top: 40px; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; }
.foot-grid .col h6 { font-family: 'JetBrains Mono', monospace; font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--fg-4); margin-bottom: 14px; }
.foot-grid .col a { display: block; padding: 5px 0; color: var(--fg-3); font-size: 14px; transition: color .15s; }
.foot-grid .col a:hover { color: var(--fg-1); }
.foot-grid .about p { color: var(--fg-3); font-size: 14px; margin: 14px 0; max-width: 300px; }
.foot-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
  margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--line-1); color: var(--fg-4); font-size: 13px; }
.foot-bottom .tag { font-family: 'JetBrains Mono', monospace; }

/* ========================= RESPONSIVE ============================ */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { order: -1; }
  .g-3, .g-2, .arch-grid, .dl-cards, .iface { grid-template-columns: 1fr; }
  .docs-layout { grid-template-columns: 1fr; }
  .docs-side { position: static; display: none; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; }
}
@media (max-width: 600px) {
  .section { padding: 64px 0; }
  .hero { padding: 56px 0 40px; }
  .stat-row { grid-template-columns: 1fr 1fr; }
  .dl-row { grid-template-columns: 1fr; gap: 10px; }
  .foot-grid { grid-template-columns: 1fr; }
  .cta-band { padding: 36px 22px; }
  .nav-actions .btn-line { display: none; }
}

/* mobile drawer */
.mobile-menu { display: none; position: fixed; inset: var(--nav-h) 0 0; z-index: 99;
  background: rgba(4,6,12,0.97); backdrop-filter: blur(8px); padding: 20px 24px; overflow-y: auto; }
.mobile-menu.open { display: block; }
.mobile-menu a { display: block; padding: 14px 4px; font-size: 17px; border-bottom: 1px solid var(--line-1); color: var(--fg-1); }
.mobile-menu .btn { width: 100%; margin-top: 16px; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto !important; transition-duration: .01ms !important; }
}

/* ===================== MULTI-PAGE ADDITIONS ===================== */
/* compact page header for sub-routes */
.page-top { padding: 56px 0 8px; }
.crumbs { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--fg-4);
  font-family: 'JetBrains Mono', monospace; margin-bottom: 18px; flex-wrap: wrap; }
.crumbs a { color: var(--fg-3); transition: color .15s; }
.crumbs a:hover { color: var(--fg-1); }
.crumbs svg { width: 13px; height: 13px; opacity: .6; }
.crumbs .cur { color: var(--accent); }

.page-title { font-size: clamp(28px, 4.4vw, 42px); line-height: 1.1; letter-spacing: -0.03em;
  font-weight: 680; margin-bottom: 14px; }
.page-lead { font-size: 18px; color: var(--fg-2); max-width: 660px; }

/* section without big top padding when it follows a page-top */
.section.tight { padding-top: 40px; }

/* simple two-column prose for docs index cards */
.doc-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.doc-link-card { display: block; background: linear-gradient(180deg, var(--bg-surface), var(--bg-base));
  border: 1px solid var(--line-1); border-radius: var(--r-md); padding: 22px; box-shadow: var(--shadow-card);
  transition: border-color .2s var(--ease), transform .2s var(--ease); }
.doc-link-card:hover { border-color: var(--line-2); transform: translateY(-2px); }
.doc-link-card .ico { width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center;
  background: var(--accent-dim); border: 1px solid var(--accent-line); color: var(--accent); margin-bottom: 14px; }
.doc-link-card .ico svg { width: 19px; height: 19px; }
.doc-link-card h3 { font-size: 16px; font-weight: 620; margin-bottom: 6px; display: flex; align-items: center; gap: 6px; }
.doc-link-card h3 .arr { margin-left: auto; color: var(--fg-4); width: 16px; height: 16px; transition: transform .2s, color .2s; }
.doc-link-card:hover h3 .arr { transform: translateX(3px); color: var(--accent); }
.doc-link-card p { font-size: 13.5px; color: var(--fg-3); }

@media (max-width: 980px) { .doc-cards { grid-template-columns: 1fr; } }

/* ===================== HERO APP-WINDOW MOCK ===================== */
/* Мокап реального десктоп-клиента: окно с сайдбаром, кольцом подключения
   и карточкой текущего сервера. Зеркалит Windows-UI (сайдбар + ring + aurora). */
.appwin {
  border: 1px solid var(--line-2); border-radius: 16px; overflow: hidden;
  background: var(--bg-base); box-shadow: var(--shadow-pop);
}
.appwin .titlebar {
  display: flex; align-items: center; gap: 9px; height: 42px; padding: 0 14px;
  border-bottom: 1px solid var(--line-1); background: var(--bg-inset);
}
.appwin .titlebar .tb-logo { width: 18px; height: 18px; color: var(--accent); }
.appwin .titlebar .tb-name { font-size: 12.5px; font-weight: 650; letter-spacing: -0.01em; }
.appwin .titlebar .tb-name span { color: var(--fg-3); font-weight: 500; }
.appwin .titlebar .tb-pill {
  margin-left: auto; font-family: 'JetBrains Mono', monospace; font-size: 11px;
  color: var(--accent); background: var(--accent-dim); border: 1px solid var(--accent-line);
  border-radius: 999px; padding: 4px 11px; display: inline-flex; align-items: center; gap: 6px;
}
.appwin .tb-pill .dt { width: 6px; height: 6px; border-radius: 50%; background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim); }

.appwin .awbody { display: grid; grid-template-columns: 158px 1fr; min-height: 332px; }

.appwin .side { background: var(--bg-surface); border-right: 1px solid var(--line-1);
  padding: 12px 10px; display: flex; flex-direction: column; gap: 3px; }
.appwin .side .nav-i { display: flex; align-items: center; gap: 10px; padding: 8px 10px;
  border-radius: 10px; font-size: 13px; color: var(--fg-3); }
.appwin .side .nav-i svg { width: 16px; height: 16px; flex: none; }
.appwin .side .nav-i.on { color: var(--accent); background: var(--accent-dim);
  box-shadow: inset 2px 0 0 var(--accent); font-weight: 550; }
.appwin .side .grow { flex: 1; }
.appwin .side .acct { display: flex; align-items: center; gap: 9px; padding: 8px 9px;
  border: 1px solid var(--line-1); border-radius: 10px; background: var(--bg-inset); }
.appwin .side .acct .av { width: 24px; height: 24px; border-radius: 7px; flex: none;
  background: var(--accent-dim); border: 1px solid var(--accent-line); color: var(--accent);
  display: grid; place-items: center; }
.appwin .side .acct .av svg { width: 13px; height: 13px; }
.appwin .side .acct .nm { font-size: 12px; font-weight: 600; line-height: 1.2; }
.appwin .side .acct .nm small { display: block; color: var(--fg-4); font-weight: 400; font-size: 10.5px; }
.appwin .side .ver { font-family: 'JetBrains Mono', monospace; font-size: 10.5px;
  color: var(--fg-4); padding: 8px 6px 2px; }

.appwin .main { position: relative; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 16px; padding: 30px 24px; overflow: hidden; }
.appwin .main::before {
  content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(420px 300px at 70% 12%, rgba(34,211,238,0.14), transparent 60%),
    radial-gradient(360px 260px at 18% 88%, rgba(103,232,249,0.10), transparent 60%);
}
.appwin .main > * { position: relative; z-index: 1; }
.appwin .ring2 {
  width: 122px; height: 122px; border-radius: 50%; display: grid; place-items: center;
  border: 2px solid var(--accent); color: var(--accent);
  background: radial-gradient(circle at 50% 38%, rgba(34,211,238,0.12), transparent 70%);
  box-shadow: 0 0 0 8px var(--accent-dim), 0 0 44px -6px rgba(34,211,238,0.6);
  animation: ringpulse 2.8s var(--ease) infinite;
}
.appwin .ring2 svg { width: 42px; height: 42px; }
@keyframes ringpulse {
  0%,100% { box-shadow: 0 0 0 8px var(--accent-dim), 0 0 40px -8px rgba(34,211,238,0.5); }
  50%     { box-shadow: 0 0 0 13px rgba(34,211,238,0.06), 0 0 52px -4px rgba(34,211,238,0.75); }
}
.appwin .st2 { text-align: center; }
.appwin .st2 b { color: var(--accent); font-size: 16.5px; font-weight: 650; letter-spacing: -0.01em; }
.appwin .st2 span { display: block; margin-top: 3px; font-family: 'JetBrains Mono', monospace;
  font-size: 12px; color: var(--fg-3); }
.appwin .srv { display: flex; align-items: center; gap: 11px; width: 100%; max-width: 300px;
  background: var(--bg-elevated); border: 1px solid var(--line-2); border-radius: 12px; padding: 11px 14px; }
.appwin .srv .flag { font-size: 19px; line-height: 1; }
.appwin .srv .nm { font-size: 13.5px; font-weight: 600; }
.appwin .srv .nm small { display: block; color: var(--fg-4); font-size: 11px; font-weight: 400;
  font-family: 'JetBrains Mono', monospace; }
.appwin .srv .pg { margin-left: auto; font-family: 'JetBrains Mono', monospace; font-size: 11.5px;
  color: var(--accent); background: var(--accent-dim); border: 1px solid var(--accent-line);
  border-radius: 8px; padding: 4px 10px; }

@media (max-width: 480px) {
  .appwin .awbody { grid-template-columns: 54px 1fr; }
  .appwin .side .nav-i span, .appwin .side .acct .nm, .appwin .side .ver { display: none; }
  .appwin .side .acct { justify-content: center; }
}

/* show docs sidebar on its own pages even though base hides at 980 — keep hidden on small, fine */

/* ================= ЛЕНДИНГ: компоненты только для главной ================= */

/* Ряд кнопок скачивания под основным CTA. Отдельно от .hero-cta, чтобы
   «Купить подписку» визуально главнее, а платформы читались как выбор. */
.hero-dl { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
.hero-dl .btn .ver {
  font-family: 'JetBrains Mono', monospace; font-size: 12px;
  color: var(--fg-4); font-weight: 400; margin-left: 2px;
}
.hero-note { margin-top: 18px; display: inline-flex; align-items: flex-start; gap: 8px;
  font-size: 13.5px; color: var(--fg-3); }
.hero-note svg { width: 15px; height: 15px; color: var(--ok); flex: none; margin-top: 4px; }

/* Врезка «Что такое ключ входа». Ключевой блок страницы: снимает главный
   вопрос новичка и прямо проговаривает, что ключ работает только с нашим
   сервисом и приложение не просит чужие учётные данные. */
.keybox {
  display: grid; grid-template-columns: 1fr 1fr; gap: 32px;
  background: radial-gradient(120% 140% at 0% 0%, var(--accent-dim), transparent 62%), var(--bg-surface);
  border: 1px solid var(--accent-line); border-radius: var(--r-lg);
  padding: 32px; margin-top: 20px; box-shadow: var(--shadow-card);
}
.keybox .kb-head { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.keybox .kb-head .ico {
  width: 38px; height: 38px; border-radius: 11px; display: grid; place-items: center; flex: none;
  background: var(--accent-dim); border: 1px solid var(--accent-line); color: var(--accent);
}
.keybox .kb-head .ico svg { width: 19px; height: 19px; }
.keybox h3 { font-size: 20px; font-weight: 650; letter-spacing: -0.02em; }
.keybox p { color: var(--fg-2); font-size: 14.5px; }
.keybox p + p { margin-top: 12px; }
.keybox .sample {
  margin-top: 18px; padding: 12px 14px; border-radius: var(--r-sm);
  background: var(--bg-inset); border: 1px solid var(--line-2);
  font-family: 'JetBrains Mono', monospace; font-size: 12.5px; color: var(--fg-3);
  overflow-x: auto; white-space: nowrap;
}
.keybox .sample b { color: var(--accent); font-weight: 500; }

.kb-facts { list-style: none; padding: 0; margin: 0; display: grid; align-content: start; }
.kb-facts li {
  display: flex; gap: 12px; padding: 13px 0; border-top: 1px solid var(--line-1);
  font-size: 14px; color: var(--fg-2); line-height: 1.55;
}
.kb-facts li:first-child { border-top: 0; padding-top: 0; }
.kb-facts li b { color: var(--fg-1); font-weight: 600; }
.kb-facts .mk { width: 20px; height: 20px; border-radius: 6px; display: grid; place-items: center;
  flex: none; margin-top: 2px; }
.kb-facts .mk svg { width: 12px; height: 12px; }
.kb-facts .mk.yes { background: rgba(16,185,129,0.12); color: var(--ok); }
.kb-facts .mk.no  { background: rgba(239,68,68,0.12);  color: var(--danger); }

/* Плитки разделов приложения (секция «Интерфейс») */
.scr-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 1px; }
.scr-list li { display: flex; gap: 14px; align-items: flex-start; padding: 15px 0; border-top: 1px solid var(--line-1); }
.scr-list li:first-child { border-top: 0; }
.scr-list .ic {
  width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; flex: none;
  background: var(--bg-elevated); border: 1px solid var(--line-2); color: var(--accent);
}
.scr-list .ic svg { width: 17px; height: 17px; }
.scr-list .lab {
  font-family: 'JetBrains Mono', monospace; font-size: 11.5px; color: var(--accent);
  background: var(--accent-dim); border: 1px solid var(--accent-line); border-radius: 6px;
  padding: 3px 9px; height: fit-content; flex: none; min-width: 104px; text-align: center;
  margin-top: 5px;
}
.scr-list .tx b { display: block; font-size: 14.5px; font-weight: 600; color: var(--fg-1); }
.scr-list .tx span { display: block; font-size: 13.5px; color: var(--fg-3); margin-top: 3px; }

/* ---- «Только у нас»: карточки с тем, чего нет в сторонних клиентах ----
   Отличаются циановой рамкой, подсветкой из угла и бейджем. Смысл маркировки
   объяснён легендой под заголовком секции — без неё цвет читался бы просто
   как декоративный акцент. */
.card.mif {
  border-color: var(--accent-line);
  background:
    radial-gradient(150% 120% at 100% 0%, rgba(34,211,238,0.10), transparent 58%),
    linear-gradient(180deg, var(--bg-surface), var(--bg-base));
}
.card.mif:hover { border-color: rgba(34,211,238,0.55); }
.card .card-top { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 16px; }
.card .card-top .ico { margin-bottom: 0; }

.only-mif {
  margin-left: auto; flex: none; display: inline-flex; align-items: center; gap: 6px;
  font-family: 'JetBrains Mono', monospace; font-size: 10.5px; font-weight: 600;
  letter-spacing: 0.04em; text-transform: uppercase; white-space: nowrap;
  color: var(--accent); background: var(--accent-dim);
  border: 1px solid var(--accent-line); border-radius: 999px; padding: 4px 10px;
}
.only-mif svg { width: 11px; height: 11px; }

.legend {
  display: inline-flex; align-items: center; gap: 10px; flex-wrap: wrap;
  margin-top: 18px; padding: 10px 14px; border-radius: var(--r-sm);
  background: var(--bg-surface); border: 1px solid var(--line-1);
  font-size: 13.5px; color: var(--fg-3);
}
.legend b { color: var(--fg-2); font-weight: 550; }

/* Сноска под карточками загрузки */
.dl-foot { margin-top: 18px; text-align: center; font-size: 13.5px; color: var(--fg-4); }
.dl-foot a { color: var(--accent); }

@media (max-width: 980px) {
  .keybox { grid-template-columns: 1fr; gap: 26px; padding: 26px; }
}
@media (max-width: 600px) {
  .hero-dl .btn { flex: 1 1 100%; }
  .scr-list li { flex-direction: column; gap: 8px; }
  .scr-list .lab { min-width: 0; }
}